Door closing and checking device



cps. ASPINWALL 2,360,095

DOOR CLOSING AND GHECKING"DEVICE Oct. 10, 1944.

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3 Sheets-Sheet 1 Q INVENTOR. Carl 5 (21579 g f Rm 9 Wm QN @S QQQNQ N BYAda wwwmmwmwx gr Filed Sept. '8, 1941 QN MN.

1 c. s. ASPINWALL DOOR QLOSING'AND CHECKING DEVICE Filed Sept. 8, 1941-s' sheets-sheet 2 1 INVENTOR.

Oct. 10, 1944. c. s. A-SPINWALL noon CLOSING AND CHECKING DEVICE FiledSept. 8, 1.941 3 Sheets-Sheet 3 INVENTORL BY CZZ'rZJ dlapzjzwad,

Patented Oct. 10, 1944 DOOR CLOSING AND CHECKING DEVICE Carl S.Aspinwall, Chicago, 111., assignor to Norton Lasier Company, Chicago,111., a corporation of Illinois Application September 8, 1941, SerialNo. 409,935

(Cl. Iii-51) 33 Claims.

The present invention relates to door closing and checking devices andto novel mechanisms for operatively connecting the same to doors.

Among the objects of the present invention is to provide a door closingand checking device which is highly efiicient in operation, is simpleand compact in construction, and which readily adapts itself forinstallation in concealed position with respect to the door.

Another object of the present invention is to provide a novel doorclosing and checking device and means for connecting the same to a door,which may be applied to doors opening in a single direction or doors ofthe double acting type which swing open in both directions from closedposition.

Another object within the purview of the presentinvention is to providea novel door closing and checking device and means for connecting thesame to a door, so constructed and arranged with respect to said doorthat the force required to, overcome the spring resistance of the saiddoor closing device is greatest during movement of said door through alimited angular displacement with respect to its normal closed position.

Still another object of the present invention is to provide a novel doorclosing and checking device and means for operatively connecting thesame to the door whereby the movement of the door during limited angulartravel thereof into full open position is controlled bythe said checkingdevice to provide an effective backstop or cushioning arrangement forsaid door into said full open position.

Still a further object of the present invention is to'provide a noveldoor closing and checking device and novel means for attaching the sameto a door as described in the two immediately above paragraphs, in whichthe said checking device in conjunction with the closing device andmeans for connecting said devices to the door, operate movement of thedoor from any of its open positions to its normal closed position.

A still further object of the present invention isto provide a noveldoor closing and checking device'for a door of the double acting type,and

novel means for connecting the same thereto, and

as] now experienced with such doors at the present time.

to provide for substantially uniform As a further desideratum, thepresent invention contemplates a novel closing and checking device for adoor'a'nd novel means for connecting the same thereto which is positivein action, extremely durable and serviceable, and which is particularlycharacterized as being positive in its closing action and as having thedesirable functional qualities hereinabove set forth.

As another aspect, the present invention involves a novel spring devicewhich may be readily constructed for either type of door as hereinsuggested, and so constructed and arranged with respect to the doorthrough the medium of novel connecting means that movements of the doorinto open position as characterized above, are effected.

More particularly, the present invention contemplates a novel doorclosing device as immediately above described, in combination with adoor checking device directly connected to one another and to the doorwhereby movements of the door into and out of its open positions asabove indicated may be readily effected.

The present invention has as a further object the provision of a novelconnection between the spring means for the door closing device and thedoor which renders the resistance of the spring means more difiioult toovercome during the initial movement of the door through limited angulardisplacement with respect to its normal closed position, therebyproviding a door which is positive in its closing movement and whichcomes to rest without oscillation at its normal closed position.

'The invention also contemplates as an object thereof the provision'of anovel connection between the door closing and checking device whichembodies in its construction a pivot mounted on the door in fixedrelation to the door pivot, and an operating arm having slidingcooperative relation 'withsaid pivot to provide, in conjunction with thesaid door closing and checking device, a novel means for producing thedesired results as hereinaboVe enumerated. More particularly, theinvention embraces within its scope the provision of a novel operatingarm constituted in part by a longitudinal slot defined by opposed guideelements, at least one of which is provided with a recess adapted tocooperate with the fixed pivot for holding the door in open position andwhich may further, if desired, embody at least one guide'element' whichis readily detachably secured to the arm for ease and facility inassembling the arm with respect to the pivot.

A still further object of the present invention I 'later'appear and asshown in Figure 1 of the drawings;

sstructure- 2ll; V, r Iherframestructure 28: adjacent the right- Yhandside thereof, as viewedjin Figure 1 of the j:

, drawings, includesa horizontal wall 36 having lthefianged openings 38'and 40 and-abov which ismounted thedoor checkingudevice I8; This tdoorpcheckingldevice includes the parallelly a e, ranged cylinders .42and 44- having intercomm'u J) nicatingf chambers which are disposeddouble is to provide a novel pivot'mechanism for a door which may beadvantageously used in association with the novel door closing andchecking device as set forth herein.v r i Other objects, features,capabilities and advantages are comprehendedby this invention, as willare inherently possessed v thereby. 7

Referring to the drawings: 1 Figure 1 is a side elevationalview incrosssection of a door closing and checking device and headed pistonsformed with operating racks, such as 46, as shown in Figure '1 of thedrawings, intermediate and in meshing relation with which is a pinion 48mounted on an operating spindle 58 which is suitably journaled in theanti-friction bearings, such as 52, in the cylinders and which has asprocket 54' mounted on the upper end thereof. The spindle 58 is sealedby a packmeans for connecting the same to a door, both 5 constructed inaccordance withthe present invention; V V r V Figure 2'is a top planviewof thedevice shown in Figure l of the drawings;

Figure 3, is a bottomvplan 'view of Figure 4 is a view partly in planeand partly ;in section of the connecting means of the device 3 shown inFigure 1 and taken in the plane represented by the line 4+4 of thatfigure;

Figure ,5 is a fragmentary bottom plan th device view ofthe'deviceof'Figure- 1' of the drawings, showing" the-position of certainmechanism thereof 3 '-when the doorvis in full open position; and

Figure 6 is a diagrammatic'view of the door and connecting means and therelation of one :to' the other in several positions ofthe door.

Referring .now more in detail to the drawings, a door closing andchecking device made in 'accordance with the present invention "andgenjerally referred toas 2 is shown mounted in a recess' l in the'lintel"6 of a door framewhich ,includesopposed jambs such as 8 and a conven,tional sill (not disclosed) in opposed relation to the lintel 6. Thedoor closing and checking de- -vice 2 selected to illustrate the presentinvention is shownjasbeing' connected to a door ll] of the double actingtype through the medium of con- -necting means generally represented asl2. The

door In is mounted in theidoor frame by opposed V pivots, one of vwhi'chas represented at I4, is of novel construction, which will" behereinafter de- 1 scribed more in detail.

Thedoo'r closingand checking device comprises aclosing mechanism ordevice, generally referred j to'as 'lfigand 'a doorvchecking mechanismor y 1 device, "generally'referredto as I8, mounted as willibe morefully disclosed hereinafter, within S the frame 20 'constitutingahousing for various mechanisms and. forsecuring the same in flushrelation to the linte16. The frame structure 28 i may be formed in partas a casting .22 flanged las' at 24 and 26 having suitableopeningssuchas 28., to receive securingim'eans ,for attaching ing gland as at 56 toprevent loss of fluid Which is provided within the fluid cylinders 42and 44 Control of the door I0 during certain of its movements isefiected through and by virtue of adjustable valve elements 58, 60, 62and 64 which are provided with slotted heads, the first two of whichproject into, the opening formed by the flanged structure 38 and thelatter two of which project into the opem'ng formed by the flangedstructure 48, for accessibility when. the plate 32 is removed. Thesevalve elements regulate the fluid orifices of the ducts communicatingwith 'the fluid chambers of the cylinders to regulate the movements ofthe door, which-Will be here inafter more, fully described.

To the left of the door checking device I8, as viewed in Figure 1 of thedrawings, the frame structure 20 is provided with a horizontallydisposed shelf; or wall 66 having the flangedopenings 68, 78 and 12through which project the spindles M, 76, and 78; respectively, Inopposed relation to the wall or shelf 66 is a wall 88 removably securedto the wall structure 82 of the frame 28 by means of screws, such'as 84,and which is formed with flanged, openings 86, 88'

, and--90 into which project the spindles 14, 16

and f|8,respective1y. V

The spindle l4 and 1B constitute operating shaftsfor spring devices 92and 94, respectively, and have their upper ends of reduced diameter asat96 journaled in the flanged structure .de-

finin the openings 86 and 90, respectively, of

thep1ate80p- The lower ends of the spindles I4 and 18 are journaled inthe flanged structure defining the openings 68 and 12 through theanti-friction thrust bearings 98 and I00, respectively, which areretained against upward displacement by the spring rings, such as I02,fitting peripheral grooves formed in the spindles adjacent saidantifriction thrust bearings. The spindles l4 and 18 likewise have theiropposite ends of reduced diameter, as at I84, upon which are mounted thratchets I86 and I88, respectively. t q The sprin devices 92 and 94 areadapted to resist movement of the door in oppositedirections inasmuch asthe door is of the double act- ,ing type, and said spring devices haveone end the'said' frame tothelintelfi. 'Tofacilitateassembly' andreplacement of parts, the said casting connected to the spindles and theother endconnected to the wall frame structure 82, all as is:2-2'isclosedby aremovable cover, such as 30, l

to seal the device at the topland at one end, ,Furthermmethe finishingplate 32 may be pro;

' vided and secured by, attaching means engaging in th openings, such,as 3 4, for providing a fini ishednflush surface along the ,lower' edgeo f the lintel ,6 and toilikewis'e completely conceal thevariousfmechanisms on the under side of'said conventional in theart.

The spindle 16 disposed between th spring devices 92 and 94 has itsuppervend journaled in the flanged structure forming th opening 88 bymeans of the anti-friction bearing H8," the said spindle extendingdownwardly through'the opening 18 and beingjournaled in theflangedstructure forming the opening wry the anti friction bearing I I2. Thesaid spindle 16 is positioned'at its lower-end inv respect to itsjournal mountings by means of thespring rin I I4 abutting the'antifriction bearing H2, which s? mounted within a suitable grooveprovided in the spindle 16- at that point. The spindle I6 is positioned'at its upper end by a sprocket H6 which: is mounted thereon and whichabuts the inner race ring of the anti-friction bearing 1 l0,

th said sprocket II6 being connected to the sprocket 54 by a flexiblechain I I8.

The spindle 16 further has mounted upon its lower end a cross bar I20provided with the opposed hooks I22 and I24 adapted to interengage theend rings I26 and I28 of flexible chains I30 and I32, respectively. Theflexible chains I30 and I32 embrace the ratchets I06 and I08,respectively, and have their end links, such as I34 and I36, formed withlugs, such as I38 and I40, engaged within recesses or notches, such asI42, extending radially inwardly from the periphery of the ratchets andbeing spaced angularly about said periphery whereby a connection isefieoted between the cross bar I20 and either of the spring devices 92and 64. The lugs I40 of the flexible chains I30 and I32 are operative toprovide the connection above described, whereas the lugs I38 of theseflexible chains are provided to maintain the flexible chains inoperative position with respect to the ratchets I 06 and I 08 wheneither one of the hooks I22 or I24 is angularly displaced with respectto its ring I26 or I28, such as shown in Figure of the drawings. Springtension of the devices 82 and 94 is maintained by the stops, such asI44, adjustable through the medium of the screws I46 and which engagethe end links I34 of flexible chains I30 and I32 when the cross arm orbar I20 is in normal position, as shown in Figure 3, which positioncorresponds to the normal closed position for the door I0.

In order to adjust the spring tension of the devices 92 and 94, thespindles 14 and 18 are formed with non-circular openings, such as I48,adapted to receive a tool whereby the said ratchets may be turnedangularly to any adjusted position and to permit placement of theflexible chains I30 and I32 in any adjusted position with respectthereto, thus providing means for the ready adjustment of the springdevices 92 and 94. Such adjustment can take place upon removal of thefinishing plate 32.

The connecting means I2 is mounted in substantially flush relation tothe top edge of door I0 in a recess I50 and comprises a part of anoperating arm I 52 provided with a slot I54 in embracing and cooperativerelation to a roll I56 mounted upon the stud pin I58, which in turn isconnected to the supporting bar I60 having one end formed with thebearing block I 62'.

As more clearly shown in Figure 4 of the drawings, the operating bar ofthe present assembly is of multi-part construction comprising the hingeelement I64 connected to the lower end of the spindle 16 and to whichare removably connected, by the screws I66, opposed guide elements I68and I forming the slot I54 and which cooperate with the roll I56. Theguide elements I68 and I16 are removably connected adjacent theiropposite ends by means of the screws I12 to a spacer block I14.Furthermore, in order to assure safety in operation of the operating armI52, the said guide elements I68 and I10 are each provided at theirinner end with a securing lug I16 received within recess I18 formed inthe pivot block I64.

In order to hold the door in its full open position, as will be moreclearly described hereinafter, the guide elements I68 and I10 are formedwith opposed recesses, such as I1I, communicating with the slot I54 andwhich cooperate with the roller I56 when the same is moved into therecesses as the door is moved into its full open position.

The pivot I4 for the door I0 comprises a housing I which, in the presentinstance, is cast integral with the housing structure 20 and which has alongitudinal bore I62 open from the lower housing in alignment with asimilar opening formed in the plate 32. Mounted within the bore I82 is aplunger I84 spring-pressed downwardly through the medium of the coilspring I86 disposed in abutting engagement at one end of the plunger I84and at its other end with the housing I80.

This plunger has mounted therein a laterally extending pin I88 extendingthrough a slot I90 provided in the side of the housing I80 and whichslot limits the downward movement of the plunger I 84 to maintain thesame in assembled relation within said housing. The pivot for the doorIE) is completed by an anti-friction bearing assembly I32 mounted inthebearing block I62 and which is adapted to receive the reduced end I94 ofthe said plunger I84 to hold the door in assembled relation to the doorframe. Assembly and disassembly of the plunger I84 with respect to thedoor are effected by a tool insertable through the opening I96 formed inthe flange 26 inalignment with the pin I88 which permits the plunger tobe moved in the housing I80, thus facilitating the erection and removalof the door of the drawings showing the door and the operating arm forthe door closing and checking device in various positions. As is evidentfrom Figures 1 ta 5, inclusive, the mechanism hereinabove described isdesigned for a door. of the double acting type which, .in Figure 6, isdiagrammatically shown as being pivoted as at I94 and which door is inits normal closed position as represented by line I96 and accordingly isadapted for movement angularly to either side of its center lineposition I68.

As hereinbefore indicated, novel results are accomplished in accordancewith the present invention because of the particular lever systemthrough which the door is connected to the door I closing device I6 andto the door checking device I8. Such results are accomplished in part bythe lever system as shown in Figure dot the drawings and in part by thelever system as shown in Figure 5 constituted by the cross-arm I20 andthe flexible chains I30 and I32 connecting the same to the springdevices.

By reference to Figure 6, it will be clearly apparent that, consideringthe door I0 as part of this system, force applied to or delivered fromthe roller I56 through the medium of the door acts through a fixed leverarm defined by the distance between the roller I56 andthe pivot I4. Onthe other hand, however, since the roller slides within the slot I54 ofthe arm I52, any force applied to or delivered from the roller throughthe medium of the operating arm I52 acts through a variable lever armdefined by the distance between the roller I56 and spindle 16 whichdoor.

in turn is dependent upon the position, of the Accordingly, due to thelever system above described, force applied to the door necessary toovercome the resistance of the spring devices is a maximum when the dooris in its normal closed position I98 and is a minimum when the door isinrits full open position (except for theflbackcheck arrangement: to belater described). In

the present illustrative example of the invention, {the roller I56 isfixed in position with respect to pivot. I4 and spindle I6 so that theforce required to overcome the resistance of the spring units isgreatest during movement of the door through substantially 1 to ,15degrees from normal'closed position, This is quite evident when it isobserved" that the arm I52, as shown in the. door ,position asrepresented at A of Figure 6, has traveledahead of the door aconsiderable angular distance during movement of this door from itsnormalclosed position. From the door position as represented at A to thedoor position repre- {sented at B, less force is required to overcomethe spring resistance due to the increase in the lever arm betweentheroller I56 and the spindle I6,

. as represented by, the diagram of door position 13. This is apparentfrom the drawings; which show that forangular movement of the doorbetween positions A and B, the operating arm has moved. angularlythrough substantially the same distance. It'is also apparent from the"drawings'that the forcenecessary to overcome thelspring resistancedecreases between positions A and B between which, angular displacementof the doorv and the operating arm I52 is substantially"equal.; However,in the present device, after the-door has swung to within -10 degrees ofits full open position,'the fluidcontrol device I8 becomes effective tocheck the door swing during. its movement into full open position at C.

I Operatingin conjunction with the connecting arm I52 and roller I56 toe ifect the resultshereinabove described is the crOSs-arm' IZEI and thedevice when the door is in its normal closed posiftion is. not only dueto the minimum lever ar'rn' provided at that time between; spindle I6and roller I50, but isalso due-to the fact that the effective leverarmfor the connection of the fcross arm I to either of the flexible chainsI 7 and I32 is a maximum. Due to the disposition of the cross-armI20-with respect to the chains :I30 and I32, the effective lever armbetw'een the cross-arm I20 andthe spring devices 92and 94 decreases asthe cross-arm I20 is angularly moved from a position corresponding ,tothe normal :closed position of the door to its normal full openpositionjas willbe quite apparent from Figures 3 and 5, Asshown' inFigure 5, for examplathe cross-arm I20 is displaced .90 degrees from itsposition in Figure 3,, corresponding to the posi- This' lever arm variesfrom a minimum :when the door is at its normal closed position,

as. represented at I98, to its full open position, as represented at C;

aecmoes nectin-g the-door to the door closing and checking device, ashereinabove-described, is-d-ue in part to the particular connectionbetween 16 and the door I0 and in part due to the particular arrange:

ment of the cross-bar I20 and either of the chains I30 anduI32.

When the. door is moved into the position as I represented at C inFigure 6 of the drawings,

roller I56 engages one of the slots I'II the door in that position, V

The mechanism hereinabove described cooperates with'the fluid controlmeans I8 to .cause to ;hold

substantially'uniform movement'of the door from 7 its full open positionto itsnormal closed position. As shown for example in Figure 6 of thedrawings, valve 60 is adjusted to produce this uniform movement. Whenthe door I0 is swung to open position in the opposite direction'fromthat illustrated in Figure 6, the valve member 62 is properly adjustedwhereby the fluid control 'means I8 cooperates with the other mechanismspreviously described to produce a uniform movement of the door intoclosing position.

Furthermore, back checking of the door during its movement into fullopen position represented in Figure Got the drawings is controlled byad- I justable valve member 64,.while back'checking v of the door duringits movement into open posi-1 tion.in the opposite direction iscontrolled by f adjustable valve member 58. With the mechanismshereinabove type as illustrated in the drawings will move uniformlyfrom. any open position to its normal closed position, as representedbyline I98, and

. come to a positive stop without oscillation in the opposite direction.Furthermore because of the particular. arrangement of the springmechanism 3 and the meansconnecting the same to'the door,

there is a buildingup of force to a' maximum when the door is in itsnormal closed position, at

which time the operating arm I52 is on dead center with respect to thedoor.v This is a highly desirable characteristic in a door of this typein particular disposition thereof with respect to the .ratchets I06 andI08 and the flexible chainsII30' and I32 associated therewith. 7 Maximumforce required to overcomethe resistance'of the spring that positiveclosing action isassuredeven though a strong draft may beblowing'through the door opening at the time the same is closedposition.

Although thejinvention has been described in connectionwith a door ofthe doubleacting type,

f it is to be understood, however, that the'same is not limited theretobut'may' be embodied a door assembly of the single acting type.

- thermore, the invention is of such a scope as to comprehend a doorclosing and checking device and means connecting the same to the doorwhich embodies the novel features and characteristics thereof and whichisadapted for installation: in

association with the door sill for connection to a doorof either thesingle or double acting'type.

7 While I have herein described and upon the drawings shown anillustrative embodiment of the :invention, it is to be understood thatthe invention is not limited thereto but may compre hend otherconstructions, arrangements of parts,

details and features'without departing from the spirit of the invention.

Iclaim: H r o l; Ina door closingandchecking device adapted to bemounted in the lintel of a door frame,

T said device comprising a fluid control means,-a spring mechanism,means connecting said fluid control means and said spring mechanism thedoor hinged to said frame including an operating arm pivoted to saiddoor, said connecting means described in proper adjustment, a door ofthe double acting moved into its having means so connected to saidspring mechanism and said door through said pivotal connection that theforce required to overcome the resistance of said spring mechanismduring movement of said door to open position is a maximum at its normalclosed position.

, 2. In a door closing and checking device adapted to be mounted in thelintel of a door frame, said device comprising a fluid control means, aspring mechanism, means connecting said fluid control means and saidspring mechanism to a door hinged to said frame including an operatingarm pivoted to said door, said connecting means having means soconnected to said spring mechanism and said door through said pivotalconnection that the force required to overcome the resistance of saidspring mechanism is greatest during limited angular movement of the doorfrom its normal closed position to open position.

3. In a door closing and checking device adapted to be mounted in thelintel of a door frame, said device comprising a fluid control means, aspring mechanism, means connecting said fluid control means and saidspring mechanism to a door hinged to said frame including an operatingarm pivoted to said door, said connecting means having means soconnected to said spring mechanism and said door through said pivotalconnection that the force required to overcome the resistance of saidspring mechanism during movement of said door to open position is amaximum at its normal closed position, and said fluid control meanshaving means effective through said connecting means for back checkingsaid door during limited angular movement thereof adjacent and into itsopen position.

4. In a door closing and checking device adapted to be mounted in thelintel of a door frame, said device comprising a fluid control means, aspring mechanism,'means connecting said fluid control means and saidspring mechanism to a door hinged to said frame including an operatingarm pivoted to said door, said connecting means having means soconnected to said spring mechanism and said door through said pivotalconnection that the force required to overcome the resistance of saidspring mechanism is greatest during limited angular movement of the doorfrom its normal closed position to open position, and said fluid controlmeans having means effective through said connecting means for backchecking said door during limited angular movement thereof adjacent andinto its open position. 5. In a door closing and checking device adaptedto be mounted in the lintel of a door frame, said device comprising afluid control means, a spring mechanism, means connecting said fluidcontrol means and said spring mechanism to a door hinged to said frameincluding an operating arm pivoted to said door, said fluid controlmeans having means for controlling said connection to provide forsubstantially uniform closing movement of said door, and said connectingmeans having means so connected to said spring mechanism and said doorthrough said pivotal connection that the resistance of said springmechanism to a force tending to open said door is greatest duringlimited angular movement of said door into closed position.

6. A door closing and checking device comprising a fluid control meanshaving an operating spindle, spaced spring devices, an operating spindlebetween said devices adapted to be connected to a door, means connectingsaid spindles, and means operatively associated with said secondnamedspindle and directly connected to said spring devices.

7. A door closing and checking device comprising a fluid control meanshaving an upwardly extending operating spindle, spaced spring devices,an upwardly extending operating spindle disposed between said devicesadapted to be connected to a door, flexible means connecting saidspindles, and means operatively associated with said second-namedspindle and directly connected to said spring devices.

8. A door closing and checking device comprising a fluid control meanshaving an upwardly extending operating spindle, spaced spring devices,an upwardly extending operating spindle disposed between said devicesadapted to be connected to a door, flexible means connecting saidspindles, a cross-bar mounted on said second-named spindle, and flexiblemeans for connecting said cross-bar and said spring devices.

9. A door closing device comprising spaced spring devices provided withnotched operating ratchets, an operating spindle disposed between saiddevices adapted to be connected to a door, said spring devices beingadapted to resist movement of said door in opposite directions, acrossbar mounted on said spindle, flexible means for connecting saidcross-bar and said spring devices, said flexible means being mounted onsaid ratchets and having lugs engaging in certain of said notches foroperatively positioning said flexible means with respect to saidratchets, and stop means for said devices adapted to cooperate with saidflexible means.

10. A door closing and checking device comprising a fluid control meanshaving an operating spindle, a spring device, an operating spindledisposed laterally f said spring device adapted to be connected to adoor, means connecting said spindles, and means directly connecting saidlastnamed spindle to said spring device.

11. A door closing and checking device comprising a fluid control meanshaving an operating spindle, a spring device, an operating spindledisposed laterally of said spring device adapted to be connected to adoor, flexible means connecting said spindles, an operating barconnected to said last-named spindle, and flexible means connecting saidbar and. said spring deoperating spindle, a fixed pivot on a door hingedto said frame, and an operating arm for said door closing deviceconnected adjacent one end to said spindl and having sliding cooperativerelation with said pivot.

14. In a door closing device adapted to be mounted on a door frame, saiddevice comprising a spring mechanism, said device having an operatingspindle disposed laterally of said spring mechanism, means providing avarying power connection between said spindle and said spring mechanism,a fixed pivot on a door hinged to said frame, and an operating arm forsaid door closing device connected adjacent one end to said spindle andhaving sliding cooperative relation with said pivot.

15. In a door closing device adapted to be mounted in the'lintelof adoor frame, said defvice comprising spacedspring mech'anisms, saiddevice having an operating spindle disposed between said mechanisms anddepending from said lintel, means for connecting said spindle to saidmechanisms, a fixed pivot on a double acting door'hinged to said frame,and an operating cooperative relation with said pivot.

16. In a door closing and checking device adapted to be mounted in thelintel of adoor frame, meansconnecting said device to a door hinged tosaid frame, said means comprising an operating spindle depending withrespect to said lintel,-a fixed pivot on said door, and an operating armconnected adjacent one end to said spindle-and .havingslidingcooperative relation with saidpivoti,

- 1'7-. In a door closing andphecking device 7 adapted to be mounted inthelintel'of a door 1 framejmeans connecting's'aid device to a doubleacting door hinged to said frame, said 'means comprising a flxed'pivoton saiddoor, an operat- 'frame, "said, device com-prising a' fluidcontrol means having an operating spindle, a spring mechanism, anoperating spindle for said spring mechanism disposed'laterally thereof,means for connecting said spindles, means connecting saidlast-namedspindle to said spring mechanism,

and means connecting said last-named spindle "to a doorhinged' toisaidframe, said means comprising a fix'ed-pivot on said door, and anoperating armiconnected adjacent one end to said spindle and havingsliding cooperative relation with said pivot.

1 -19. In a door closing and checking device adapted to be mountedon adoor frama-said device comprising a fluid control means having saidspring 'mechanisms being adapted to resist movement of a door inopposite directions'which is hinged to said 'frame, anoperating spindlefor said spring mechanisms disposed between the same, means forconnecting said spinclles, means connecting said last-named spindle tosaid spring mechanisms, and means connecting said lastnamed spindle tosaid door, said means compris inga fixed pivot on said door, and anoperating I arm-connected adjacent one end to said spindle ndh'avinsliding cooperative relation with said pivot.

20.'In a door closing and checking device I "adapted to be mounted on adoor frame, said device comprising a fluid control means having fanoperating spindle, a spring mechanism, an

operating spindle for said spring mechanism,

, means connecting said spindles, means connectling said last-namedspindle to said spring mech- 'anism, a fixed pivot on a-door hinged tosaid frame, and means for connecting said last-named spindle'to saiddoorcomprising an operating arm fixedto said last-named spindle havingsliding cooperativerelation with said pivot, said connec tionbetweensaid last-named spindle and spring mechanism having means cooperatingwith said 7 arm and its connection to said door whereby the ing arm forsaid door closing device connected adjacent one end to said spindle andhaving slidadapted to be mounted on a door frame, said device comprisinga fluid control means having open pOSitlOIl'."

force required to o'v'er'come the resistance of said spring mechanism isgreatest during movement of said door through a limited angular displaceinentwith respect to its normal closed position, and said fluid controlmeans having means effec tive through its connection to said last-namedspindle for back checking said door during limited angular movementthereof adjacent and into its 21'. In a door closing and checking devicean operating spindle, a spring mechanism, an

anism, a fixed pivot on a door hinged to said frame, and means forconnecting said, last-named spindle tosaid door comprising an operatingarm fixed tosaid'last-named spindle having s liding* during movementof-said door through'a limited angular displacement with respect to itsnormal closed position; and said fluid control means having meanseffective through its connection to said last-named spindle to providefor substantially uniform closing movement of said door;

22. In a door closing and checking device adapted to be mounted on adoor frame, said device comprising a fluid control means having anoperating spindle, a spring mechanism, an

operating spindle for said spring mechanism, means connecting saidspindles, means connecting said last-named spindle to said springmechanism, a fixed pivot on a door hinged-to said frame, and means -forconnecting said last-named spindle to said door comprising an operatingarm fixed to said last-named spindle having sliding l cooperativerelation with said pivot, said connecoperating spindle, spaced springmechanisms,

tion between said last-named spindle and spring mechanism having meanscooperating with said arm and its connection to said door whereby theforce required to overcome the resistance of said angular movementthereof adjacent and into its 7 open position and to provide forsubstantially uniform closing movement of said door.

23.,In a door closing device adapted to be mounted on a door frame, saiddevice'comprising a spring mechanism, an operating spindle for saidspring-mechanism, means connecting said,

7 spindle to said spring mechanism, a, fixed pivot on a, door hinged tosaid frame, and means 'for connecting said last-named spindle to saiddoor comprising an operating arm fixed to said spindle having slidingcooperative relation with said pivot, said connection between saidspindle and spring mechanism having means cooperating with said arm andits connectionv to said door. whereby the force required to overcome theresistance to said spring mechanism is greatest during movement of saiddo'or through alimited angular displacement with respect to its normal 7closed position. a

24. In a door closing and checking device adapted to be mounted on adoor frame, said device comprising a fiuid control means having anoperating spindle, a spring mechanism, an operating spindle for saidspring mechanism, means connecting said spindles, means connecting saidlast-named spindle to said spring mechanism, a fixed pivot on a doorhinged to said frame, and means for connecting said last-named spindleto said door comprising an operating arm fixed to said last-namedspindle having sliding cooperative relation with said pivot, saidconnection between said last-named spindle and spring mechanism havingmeans cooperating with said arm and its connection to said door wherebythe force required to overcome the resistance of said spring mechanismis greatest during movement of said door through a limited angulardisplacement with respect to its normal closed position, and said armhaving means cooperating with said door pivot for holding said door inopen position.

25. In a door closing and checking device adapted to be mounted on adoor frame, said device comprising a fluid control means having anoperating spindle, a spring mechanism, an operating spindle for saidspring mechanism, means connecting said spindles, means connecting saidlast-named spindle to said spring mechanism, a fixed pivot on a doorhinged to said frame, and means for connecting said last-named spindleto said door comprising an operating arm fixed to said last-namedspindle having sliding cooperative relation with said pivot, saidconnection between said last-named spindle and spring mechanism havingmeans cooperating with said arm and its connection to said door wherebythe force required to overcome the resistance of said spring mechanismis greatest during movement of said door through a limited angulardisplacement with respect to its normal closed position, said fluidcontrol means having means effective through its connection to saidlast-named spindle for back checking said door during limited angularmovement thereof adjacent and into its open position, and said armhaving means cooperating with said door pivot for holding said door inopen position.

26. An operating arm for a door closing'and checking device, comprisinga member having means adapted for connection to said door closing andchecking device and a longitudinal slot defined by oppositely disposedguide elements, at least one of said elements having a recesscommunicating with said slot for cooperation with a door pivot forholding said door with respect to said arm.

27. An operating arm for a door closing and checking device, comprisinga member having means adapted for connection to said door closing andchecking device and a longitudinal slot defined by oppositely disposedguide elements, at least one of said elements having a recesscommunicating with said slot for cooperation with a door pivot forholding said door with respect to said arm, and means for removablysecuring at least one of said elements in position.

28. An operating arm for a door closing and checking device, comprisinga member having means adapted for connection to said door closing andchecking device and a longitudinal slot defined by oppositely disposedguide elements, and means for removably securing at least one of saidelements in position.

29. In a door closing and checking device adapted to be mounted on adOOr frame and having an operating spindle, a fixed pivot on said door,and an operating arm connected adjacent one end to said spindle andhaving an elongated slot defined by oppositely disposed guide elementshaving guiding relation with said pivot, at least one of said elementshaving a recess communicating with said slot adapted to cooperate withsaid door pivot for holding said door in open position.

30. In a door closing and checking device adapted to be mounted in thelintel of a door frame, means connecting said device to a door hinged tosaid frame, said means comprising a fixed pivot on said door, anoperating spindle for said device extending downwardly with respect tosaid lintel and being disposed intermediate said fixed pivot and thepivot for mounting said door, and an operating arm connected adjacentone end of said spindle and having sliding cooperative relation withsaid pivot.

31. In a door closing and checking device adapted to be mounted in thelintel of a door frame, means connecting said device to a double actingdoor hinged to said frame, said means comprising a fixed pivot on saiddoor, an operating spindle for said device extending down- Wardly withrespect to said lintel and being disposed intermediate said fixed pivotand the pivot for mounting said door, and an operating arm connectedadjacent one end of said spindle and having sliding cooperative relationwith said Divot. v

32. In a door closing and checking device adapted to be mounted in thelintel of a door frame, means connecting said device to a door hinged tosaid frame, said means comprising a fixed pivot on said door, anoperating spindle for said device extending downwardly with respect tosaid lintel and being disposed intermediate said fixed pivot and thepivot for mounting said door, and an operating arm connected adjacentone end of said spindle and having sliding cooperative relation withsaid pivot, said spindle, pivot and arm being in the plane of said doorwhen the same is in closed position.

33. In a door closing and checking device adapted to be mounted in thelintel of a door frame, means connecting said device to a double actingdoor hinged to said frame, said means comprising a fixed pivot on saiddoor, an operating spindle for said device extending downwardly withrespect to said lintel and being disposed intermediate said fixed pivotand the pivot for mounting said door, and an operating arm connectedadjacent one end of said spindle and having sliding cooperative relationwith said pivot, said spindle, pivot and arm being in the plane of saiddoor when the same is in closed position.

CARL S. ASPINWALL.

